Dispensing apparatus for dispensing beverages of mixed liquids



R. YUZA' Feb. 11, 1947.

DISPENSING APPARATUS FOR DISPENSING BEVERAGES OF MIXED LIQUIDS FiledSept. 21, 1945 4 Sheets-Sheet 1 7%; 5 46 Y INVENTOR.

014 BY filhu. zw

Feb. 11, 1947. uz 2,415,571

DISPENSING APPARATUS FOR DISPENSING BEVERAGES 0F MIXED LIQUIDS FiledSept. 21, 1945 4 Sheets-Shet 2 m R. g Fania/pl; fuzz Feb. 11, 1947.

DISPENSING APPARATUS FOR DISPENSING BEVERAGES OF MIXED LIQUIDS FiledSept. 21, 1945 4 Sheets-Sheet 3 BY kmfia Feb. 11,1947. R. YU'ZA I2,415,571

DISPENSING APPARATUS FOR DISPENSING BEVERAGES OF MIXED LIQUIDS FiledSept. 21, .1945 4 Sheets-Sheet 4 8 0 7 f3 f INVENTOR. lad 0 y PatentedFeb. 11, 1947 UNITED STATES PATENT OFFICE.

DISPENSING APPARATUS FOR DISPENSING BEVERAGES OF MIXED LIQUIDS RudolphYuza, Chicago, 111., assignor to A. Dalkin Company, Chicago, 111., acorporation of Illinois Application September 21, 1945, Serial No.617,707

the'invention is theprovision for moving the syrup ejecting piston byresilient pressure, resulting from and by reason of a spring connectionbetween the driving piston and the driven piston, with the resultingstructure affording a predetermined movement of the driving piston priorto the movement of the driven piston, against a body of syrup previouslydrawn into a measuring chamber.

' Yet another and equally important object of the invention is theprovision of a dispensing apparatus of the characterhereinafter'described, wherein there is obtained a high volume of gas inthe carbonated water at the dispensing area, resulting in the dispensingof a highly carbonated drink, with the minimum amount of foam.

Still a further object of the invention is the provision of an apparatusof the character hereinafter described which, by its employment, assuresa rapid dispensing of a mixed drink, usually consisting of a syrup andcarbonated water. It is common knowledge that delay is encountered inpreparing and serving a mixed drink by reason of the fact that in thedispensing of a drink consisting of a syrup and carbonated water, alarge or deep foam head results, with the consequence that the operatormust wait until the foam is substantially dissipated before adding tothe drink additional carbonated water and syrup to provide a mixed drinkof proper volume. this in mind, it is an object of the invention todispense the syrup and carbonated water in the drinking glass in amanner such that a relatively small foam head is formed, during themixing operation, thereby facilitating rapid succession in thedispensing of the mixed drink.

A still further object of the invention is the provision of an apparatushaving a constructure serving to liberate excess gas in the carbonatedwater during the mixing operation resulting in higher carbonation of thedrawn drink.

Another equally important feature of my invention is the advance andafter flow of carbonated water in the drawing of a drink thereby With 9Claims. (Cl. 225-21) 1 the preferred form of construction, and in which:

allowing a deposit of water in the glass prior to the flow of carbonatedwater and syrup in the glass and a wash of water around the nozzle afterthe syrup flow has ceased.

Other objects will appear hereinafter.

The invention consists in the novel combina tion and arrangement ofparts to be hereinafter described and claimed.

The invention will be best understood by reference to the accompanyingdrawings showing Fig. 1 is an elevational view of the dispensingapparatus embodying my invention;

Fig. 2 is a sectional detail view taken substantially on line 2-2 ofFig. 1;

Fig. 3 is a rear view of the same;

Fig. 4 is a sectional detail view taken substantially on line 44 of Fig.1;

Fig. 5 is a sectional detail viewtakensubstantially on line 5-5 of Fig.1;

Fig. 6 is a fragmentary elevational view illustrating the piston withinits cylinder as embodied in the invention;

Fig. 7 is a front elevational view of the piston embodied in theinvention;

Fig. 8 is a rear elevational view of the piston embodied in theinvention; and

Fig. 9 is a sectional detail view taken substantially on line 99 of Fig.2. 7

Referring to thedrawings illustrating the preferred form of constructionby means of which I the several objects of the invention areaccomplished, a refrigerator is indicated at H), and it is within thisrefrigerator that a container containin the syrup and a containercontaining the carbonated water are arranged, said containersnot beingshown in the drawings as they may be of any conventional type ofconstruction and do not constitute any part of this present invention.

'This refrigerator It may be of any approved construction havinginsulated walls I l for obvious purposes. In the front wall of therefrigerator is arranged a mounting block l2 having a central openingI3. Through this opening I3 is arranged the cylinder body [4 of myimproved dispensing apparatus. This cylinder body [4 at its forward endportion is provided with a collar l6. Between the cylinder body [4 andthe block 12 is an insulating sleeve 18 formed preferably of rubber orthe like and having a flange l9 disposed between the collar l6 and theoutside wall plate 20 of the wall I I. The inner end portion 2| of thecylinder body l4 projects inwardly beyond the inner wall plate 22 of thewall ll. Disposed over this end portion of the cylinder body It is a cap23 having an annular seat 24 formed therein in which a sealing ring ispositioned and bears against the Wall plate 22. In the end portion 26 ofthe cylinder body l4 are threaded a pair of bolts 21 which draw thecylinder body 14 in a direction to compress the collar l6 against theflange 19 and the annular seat 24 against the sealing ring 25, thuseffecting a complete seal between the cy inder body [4 and the wall I I.

The collar i6 has an internal recess 28 into which seats the innerportion 29 of a head plate 30 formed as an integral part of a nozzlehead 3|. This plate 30 provides an annular peripheral flange 32, which,when the plate is connected to the cylinder body [4 by means of screws33, is tightly drawn up against the edge of the collar l6, as shown inFigs. 1 and 4.

The cylinder body 14 provides a substantially thick rear wall 34 havingformed therein, as shown in Fig. 5; a bore 35, the inner end portion ofwhich is reduced to provide an orifice 36 communicating with a measuringchamber 31, hereinafter more fully described. V

In this bore is threaded anipple 38. Carried by the inner ,endoi thisnipple 38, as at 39, is a check valve 48 .of a well-known and approvedconstruction. To this nipple is adapted to be connected a supply conduit(not shown) leading from a syrup container (not shown) for the admissionof syrupthroughthe nipple and orifice into. the measuring. chamber .31.The arrangement is such that the syrup is permitted by the check valve,to be drawn into the. measuring chamber 3], but when the syrup isejected from the measuring chamber through an outlet bore, the ch'eclvalve will automatically close because of its resilient structure,andiprevent flow of the syrup from the measuring chamber 31 back intothe container.

In this end wall 34, there is formed a bore 41, andjm'ounted in thisbore 4l is a nipple 42 carrying, as in the case of the nipple 38, acheck valve 43. This nipple 42 communicates with a vertical bore 44formed preferably though not necessarily by a drilling into the wall 34,with a plug 45 closing the bore 44 at its upper end portion. This bore'44 communicates With a horizontal delivery passage '46 formed in theside wall of the cylinder. body 14, also preferably thoughn'ot'necessarily by a suitable drilling operation.

' The arrangemeneis such that the measured syrup may be forced into thebore 44 through check valve 43, but cannot be drawn back into themeasuring chamber by reason of the closing of check valve 43 in a mannerwell kn'own in the art.

' The means for drawing the syrup into the measuring chamber 31 and forjcti'lig the measured syrup therefrom, will now be explained.

In the cylinder body I4 isarra'nge'd a piston assembly P consisting ofouter piston 47. This piston 41 at its rear end portion and immenselyadjacent its forward end portion, is provided with annular flanges 48which have slidable engageinent with the inner walls of the cylinderbody 14 and are provided with a number of openings 49 to permit theescape of "air so as toj all ow freedom of movement. of the pistonassembly in the cylinder body I4. Embracing the outer-piston 41 "andhaving rolling engagement with the inner wa isnr the cylinder body it,is a resilient piston ring 51 or a construction and "form similar to hatshowa nonitea" States Letters Patent No.

2311034, dated April '20, 11943, fdr providing an 4 effective sealbetween the outer piston 41 and the cylinder body 14.

In the lower end portion of the collar I6 is provided an opening 52which communicates with the interior of the head 3i and with the space58 between the cylinder body l4 and outer piston 41 for the dual purposeof permitting the exit of air from within the head 3! and the space topermit the freedom of movement of the piston 41 by means hereinafterdescribed and for the additional purpose of allowing exit through theweep hole 52 of any condensation which might form in the head 3| or inthe space 50.

The outer piston 41 has a cap 53' threaded thereon constituting thefront wall of the piston 41, and this front wall is provided with anopeniiig 53. Arranged within the outer piston 41 is an inner piston 54having its side walls partially relieved as at 55 from the inner wallsof the piston 4! to facilitate by reduction of friction the movement ofthe inner piston by means hereinafter set forth. This inne piston54provides a mounting stud 56 in line with a mounting stud 5! formed onthe rear wal1 58 of the piston 41. In the stud 56 is an escape opening56' which allows for the escape of air from within the piston assemblythe inner piston is movedrelatively to the outer piston.

Embracing the outer end portions of these mounting studs 56 and 5l', isan expansion spring 59 arranged within an expansion spring 68 having itsend portions mounted upon the base portion of the mounting studs 56 and51. The arrangement is such that the inner piston 54 will 57 against abody of syrup previously drawn into the measuring chamberBL The pistonassembly P together with the walls or the cylinder body I4, provide themeasuring chamber 31, Rear ward movement of this piston assembly islimited by a pilot stud '61, the length of which may be varied accordingto. the distance of movement of the piston assembly inthe cylinder body[4 in a direction toward the rear Wall 34.

Provided by the piston 5 and projecting through the opening 53, is abifurcated lug 52 carrying a pintle 83 projecting through an elongatedslot 84 of a connecting link 55.

This connecting link 65 has its end portion 68 pivotally connected bymeans of a pintle 61 to a bifurcated lug 68 formed as an integral partof a ball-shaped element 69 arranged for rotation in the slotted endportion 10 of th head 3] upon a pivot pin '12 carried by the head 3| asShown in Figs. and 4. To this pivot pin 12 isalso connected th endportion 12 of an operating handle 74. The ball-shaped element 69 has acam face adapted to engage the top edge 16 of a pair of spacedprojections 11 formed as an integral part of a valve operating disc 18.In this head 31 there is provided a distributing chamber 19 in which is"seated a resilient "ring preferably formed of compressible materialsuch as rubber or the like, and this valve operating disc 18 rests uponthis ring 80 asshown in Fig. 4. The distributing chamber 19 has aconnecting orifice '8! into which the stem 82 of the disc 18 projects.This orifice 8'l communicates with a valve chamber 83 provided at thebase of an exterior bore 84 formed in the neck portion 85 of the head3]. Threaded t me the lower end portion of this eitrior bore 84 is "asleeve 86 formed as an integral partof a nozzle tip 81; This nozzle tip8'1 is provided with a bore 89 into which there is slidably mounted thestud shaft 89 formed as an integral part of a valve cup 90 supporting avalve disc 9!, which, when in the position shown in Fig. 4, closescommunication between the orifice 8| and the valve chamber 83.

This valve disc 9| is normally held in valveclosing position through themedium of an expansion spring 92 mounted in the nozzle tip as shown inFig. 4; The nozzle tip 81 provides an enlarged portion 93 havingslidably arranged thereon a valve sleeve 81' having a valve head 94controlling outlet of syrup-from a syrup well 93 formed in the valvesleeve 81'. Communicating with this well 93 is an outlet 91 havincommunication through a combined sealing ring and restricting duct 98,with the delivery passage 46. The ring 98 includes a rubber sleeve 99embracing a short metal duct 99' and compressed against an adjacent wallof the body M to pre vent leakage of the syrup from the passage 46.

Threaded upon the reduced end portion of the valve head is a nozzle cap96 providing together with the valve sleeve 81' an outlet orifice 95 forthe mixed drink into the drinking glass (not shown).

7 At predetermined points radially with respect to each other, there areformed in the neck 85 vertical openings [90. Positioned intheseopenin'gs 190 are control pins NH the upper ends of which, as shownin Fig. 4 are disposed below and in slightly spaced relation withrespect to the valve disc 18 and are adapted to be engaged 'by this disc18 to bear thetapered end portions I02 against the valve sleeve 8'! tomove the sleeve 8'! against the action of the spring I93 whereby to openthe syrup outlet 91. While I have shown three of these controlpins NH,itismanifest that there may be less or more in number of the same.

Communicating with the bore i9 is a passage I94, and this passage inturn through a sealing ring I95, similar to the sealing ring 98,. hascommunication with a passage I96 formed in the cylinder body Hi andcommunicating with a nipple l! (Fig. to which is attached the conduitleading from the carbonated water tank.

As shown in Fig. 9, there is formed in the upper periphery of the cap 96one or more openings I08, and communicating with these openings arevertical slots I99 to liberate for reasons hereinbefore set forth,excess gas in the carbonated water during drawing of the drink and itspase sage through the outlet orifice.

To expedite and facilitate locating the valve head 3| in its properposition with respect to the cylinder body l4 and with the handle 14 andthe nozzle 38 in a substantially vertical plane, I provide, as shown inFigs. 2, 3 and i, on the cabinet 23 a locating finger 2!. This locatingfinger 21" for the purpose of locating the valve aforesaid, cooperateswith a U-shaped projection 22 carried by the inside wall plate 22 of thewall structure H.

The flow of the syrup, under ejection from the measuring chamber, isthrough the nipple 42, the check valve 43, the port 44 and into theoutlet passage 46, through the restricted duct 93 into the outlet ports91, from whence it flows from the syrup well 93 with the carbonatedwater over the valve sleeve Bl" into the drinking cup or container.

- The flow of the carbonated water from a container (not shown)- isthrough the nipple I97, the

passage I96, the restricted duct I95, passage I04;

into the distributing chamber .19 for passage through the outlet 95,through which outlet the syrup and carbonated water will by capillaryac- 5 tionhug the valve sleeve 81 as the mixture flows into the drinkingglass.

The diameter of the duct 98 in its comparison with the diameter of therestricted duct 195 is' such that the flow of syrup will be commensuratewith the flow of the carbonated water to produce a drink of proper anddesirable proportion of the mixture as is conducive to a well mixeddrink;

In the dispensing of a mixed drink, it is desirable to draw into thedrinking glass prior to the dispensing of the carbonated water and syrupa small amount of carbonated water only. This will prevent the syrupfrom sticking and con gealing upon the inside bottom of the drinkingglass. v i

To accomplish this feature of my invention, the slot and pin connection63 and 6%, respectively, between the handle 14 and the piston assembly97, has been provided. The resulting structure, while openingcommunication between'the outlet port's i H! and the distributingchamber I9 for the discharge of carbonated water, imparts no pivotalmovement to the piston assembly upon initial pivotal movement of thehandle I4 about the pintle l2 toward its forwardmost position.

To condition the apparatus for the drawing of a'drink, it is necessaryto draw a portion of the syrup into the measuring chamber 31. isaccomplished by pivoting the handle "M about its pintle E2 to itsextreme forward position, in which position of the handle 14, the pistonassembly 41 will be disposed in its innermost position within thecylinder body Hi. Thehandle H3 is then pivoted about its pintle l2 toits innermost position or to the position shown in Fig. 4, andduringthis pivotal movement of the handle [9, the piston assembly 5!will be moved to its forwardmost position within the cylinder body M, atwhich time syrup will be drawn into the measuring chamber 3?, throughthe check valve :83. During this conditioning of the apparatus,

only carbonated water will be dispensed through the nozzle assembly. g

With the apparatus thus conditioned, a mixed drink may be drawn, andthis is accomplished as follows: The initial movement of the handle 14about its pintle 12 in a direction toward its forwardmost position, willopen the valve disc 18 to allow the flow of carbonated water through theoutlet 95 into the. drinking glass so as to screen the inside bottom ofthe drinking glass from the syrup when the syrup and additionalcarbonated water are dispensed into the glass. Further movement of thehandle 14 about its pintle i2 in the above stated direction, will impartmovement to the inner piston 54, and this movement will continue untilthe springs 59 and 60 are compressed to a degree such as will move theouter piston 58 in a direction against the body of syrup previouslydrawn in the measuring chamber 3'5. This movement of the piston assembly4! will force the syrup from the measuring chamber 31 through the checkvalve 43, into the port 44, passage 45, and restricted'passage 98, intothe ports 91, and thence through the outlet 95. During this dispensingof the syrup from the measuring chamber 31, the valve disc 18 isretainedopen, by engagement between the cam surface 15 and the lugs T1, so thatcarbonated water will flow through the diverging out This let passages Hinto the outlet 95 where it will comingle with the syrup and flowtherewith into the drinking glass.

From a reading of the foregoing description, it will become apparentthat in the dispensing of the mixed drink by the use of an apparatusconstructed in accordance with the disclosure herein, there is a flow ofcarbonated. water before, as well as after, the dispensing of the syrupwith the water. This feature of the invention accomplishes the dualfunction of, first, providing a sufficient amount of carbonated water inthe drinking glass to screen the inside bottom thereof from the syrup,reducing to a minimum the formation of a film of syrup thereon, and,second, that of washing any remaining syrup from the nozzle to avoid thepresence of a film of syrup thereon which would otherwise attractinsects or the like.

As a result of the foregoing construction, a measured mixed drink isdrawn by the use of my improved dispensing apparatus, in, which there ispresent high carbonation, with the minimum amount of foam and themaximum volume of water, and that the apparatus thus described reducesto a minimum the time required to draw and serve successive mixeddrinks.

From the foregoing description, it is apparent that I have provided anapparatus which is capable of the performance of all of the hereinbeforestated objects and that the same is designed with the viewpoint ofeconomy in manufacture and efficiency in use.

While I have illustrated and described the preferred form ofconstruction 'for oarrying my invention into effect, this is capable ofvariation.

and modification without departing from the spirit of the invention. I,therefore, do not wish to be limited to the precise details ofconstruction set forth, but desire to avail myself. of such variationsand modifications as come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire toprotect by Letters Patent isr" l. Adispensing apparatus comprising acylinder body having a piston chamber and a discharge and supply passageformed therein in communication with the chamber, said body also havinganother supply passage formed therethrough, valve members in thedischarge and supply passages controlling communication between saiddischarge passage and said supply passage and the chamber, a piston insaid chamber and providing together with "said body a l measuringchamber, a nozzle assembly having communication with the dischargepassage. and said other supply passage and including valve meanscontrolling communication between said nozzle assembly and saiddischarge passage and said other supply passage, common operating meansfor said piston and said valve means, and means cooperating with saidoperating means for operating the valve means in advance of theoperation of said piston by said operating means.

2. A dispensing apparatus comprising a cylinder body having a pistonchamber and a discharge and supply passage formed therein incommunication with the chamber, said body also having another supplypassage formed therethrough, valve members in the discharge and supplypassages controlling communication between said discharge passage and:saidsupply passage and the chamber, {a piston insaid chamher andproviding=together with said body a '75 8 measuring chamber, a nozzleassembly having communication with the discharge passage and said othersupply passage and including valve means controlling communicationbetween said nozzle assembly and said discharge passage and said othersupply, passage, common operating means for said piston and said valvemeans, and means cooperating with said operating means for operating thevalve means in advance of the operation of said piston by said operatingmeans, said last-named means including a handle element and a slot andpin connection between the piston and said handle element.

3. A dispensing apparatus comprising a cylinder body having a pistonchamber and a dis-. charge and supply passage formed therein incommunication with the chamber, said body also having another supplypassage formed therethrough, valve members in the discharge and supplypassages controlling communication be tween said discharge passage andsaid supply passage and the chamber, a piston in said chamber andproviding together with said body a measuring chamber, a nozzle assemblyhaving communication with the discharge passage and said other supplypassage and including valve means controlling communication between saidnozzle assembly and said discharge passage and said other supplypassage, common operating means for said piston and said valve means,and means cooperating with said operating means for operating the valvemeans in advance of the operation of said piston by said operatingmeans, said last-named means including a handle element and a slot andpin connection between the piston and said handle element, and means forlimiting the movement of the piston in one direction in said pistonchamber.

4. A dispensing apparatus comprising a cylinder body having a pistonchamber and a discharge and supply passage formed therein incommunication with the chamber, said body also having another supplypassage formed therethrough, valve members in the discharge and supplypassages controlling communication between said discharge passage andsaid supply passage and the chamber, a piston'in said chamber andproviding together with said body a measuring chamber, a nozzle assemblyhaving communication with the discharge passage and said other supplypassage and including valve means controlling communication between saidnozzle assembly and said discharge passage and said other supplypassage, common operating means for said piston and said valve means,said last-named means including a handle element, cam means providingconnection between the handle element and the valve means, and a slotand pin connection between the piston and said handle element to permita delayed movement of the piston with respect to the movement of thevalve means by said handle element.

5. A dispensing apparatus comprising a cylinder body having a pistonchamber and a discharge and supply passage formed therein incommunication "with the chamber, said body also having another supplypassage formed therethrough, valve members in the discharge and supplypassages controlling-communication between said discharge passage andsaid supply passage and the chamber, a piston in said cham:

"ber and providing together with said body a measuring chamber, a nozzleassembly having communication with the discharge passage and saidiothersupply passageand including valve means controlling communicationbetween said nozzle assembly and said discharge passage and said othersupply passage, common operating means for said piston and said valvemeans, means for limiting the movement of the piston in one direction insaid piston chamber, said operating means for said piston and said valvemeans including a handle element, cam means providing connection betweenthe handle element and the valve means, and a slot and pin connectionbetween the piston and said handle element to permit a delayed movementof the piston with respect to the movement of the valve means by saidhandle element.

6. A dispensing apparatus comprising a cylinder body having a pistonchamber and a discharge and supply passage formed therein incommunication with the chamber, said body also having anothersupplypassage formed therethrough, valve members in the dischargepassage and the supply passage for permitting the flow of material fromthe supply passage to the chamber and from the chamber through thedischarge passage but blocking the flow of material in the reversedirection through said discharge passage and said supply passage, apiston in said chamber and providing together with said body a measuringchamber, a nozzle assembly having communication with the dischargepassage and said other supply passage and including valve meanscontrolling communication between said nozzle assembly and saiddischarge passage and said other supply passage, common operating meansfor said piston and said valve means, and

means cooperating with said operating means i for operating the valvemeans in advance of the operation of said piston by said operatingmeans, said last-named means including a handle element and a slot andpin connection between the piston and said handle element to permit adelayed movement of the piston with respect to the movement of the valvemeans by said handle element.

7. A dispensing apparatus comprising a cylinder body having a pistonchamber and a discharge and supply passage formed therein incommunication with the chamber, said body also having another supplypassage formed therethrough, valve members in the discharge passage andthe supply passage for permitting the flow of material from the supplypassage to the chamber and from the chamber through the dischargepassage but blocking the flow of material in the reverse directionthrough said discharge passage and said supply passage, a piston in saidchamber and providing together with said body a measuring chamber, anozzle assembly having C01Tll'l1lllfiication with the discharge passageand said other supply passage and including valve means controllingcommunication between said nozzle assembly and said discharge passageand said other supply passage, common operating means for said pistonand said Valve means, and means cooperating with said operating meansfor operating the valve means in advance of the operation of said pistonby said operating means, said last-named means including a handleelement and a slot and pin connection between the piston and said handleelement, and means for limiting ber and from the chamber through thedischarge passage but blocking the flow of material in the reversedirection through said discharge passage and said supply passage, apiston in said chamber and providing together with said body a measuringchamber, a nozzle assembly having communication with the dischargepassage and said other supply passage and including valve meanscontrolling communication between said nozzle assembly and saiddischarge passage and said other supply passage, common operating meansfor said piston and said valve means, said lastnamed means including ahandle element, cam means providing connection between the handleelement and the valve means, and a slot and pin connection between thepiston and said handle element to permit a delayed movement of thepiston with respect to the movement of the valve means by said handleelement.

9. A dispensing apparatus comprising a cylinder body having a pistonchamber and a discharge and supply passage formed therein incommunication with the chamber, said body also having another supplypassage formed therethrough, valve members in the discharge passage andthe supply passage for permitting the flow of material from the supplypassage to the chamber and from the chamber through the dischargepassage but blocking the flow of material in the reverse directionthrough each said discharge and supply passage, a piston in said chamberand providing together with said body a measuring chamber, a nozzleassembly having communication with the discharge passage and said othersupply passage and including valve means controlling communicationbetween said nozzle assembly and said discharge passage and said othersupply passage, common operating means for said piston and said valvemeans, means for limiting the movement of the piston in one direction insaid piston chamber, said operating means for said piston and said valvemeans including a handle element, cam means providing connection betweenthe handle element and the valve means, and a slot and pin connectionbetween the piston and said handle element to permit a delayed movementof the piston with respect to the movement of the valve means by saidhandle element.

RUDOLPH YUZA.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,466,760 Scribner et al Sept. 4,1923 2,216,890 Phillips Oct. 8, 1940

